A driver accidentally bumped a fire hydrant creating a bendi…
A driver accidentally bumped a fire hydrant creating a bending moment of 715 N·m in the pipe below. The pipe has an inside diameter of 200 mm and a wall thickness of 8 mm and is pressurized to 355 kPa. Determine the largest normal stress along the length of the pipe.
Read DetailsA rectangular beam has a cross section of b = 18 in., h = 22…
A rectangular beam has a cross section of b = 18 in., h = 22 in., and d = 19.5 in. It is reinforced with five No. 6 Grade 60 bars. The concrete strength is 3,400 psi (normal weight). The beam has Grade 60 No. 3 stirrups. Determine the modulus of rupture of the concrete, fr.
Read DetailsA rectangular beam has a cross section of b = 18 in., h = 26…
A rectangular beam has a cross section of b = 18 in., h = 26 in., and d = 23.5 in. It is reinforced with three No. 8 Grade 60 bars. The concrete strength is 6,400 psi (normal weight). The beam has Grade 60 No. 3 stirrups. Determine the neutral axis location of the cracked beam (measured from the top of the beam).
Read DetailsA rectangular beam has a cross section of b = 14 in., h = 28…
A rectangular beam has a cross section of b = 14 in., h = 28 in., and d = 25.5 in. It is reinforced with four No. 8 Grade 60 bars. The concrete strength is 3,400 psi (normal weight). The beam has Grade 60 No. 3 stirrups. Determine the transformed cross-sectional area of the bars, Ast.
Read DetailsA rectangular beam has a cross section of b = 16 in., h = 28…
A rectangular beam has a cross section of b = 16 in., h = 28 in., and d = 25.5 in. It is reinforced with five No. 6 Grade 60 bars. The concrete strength is 3,400 psi (normal weight). The beam has Grade 60 No. 3 stirrups. Determine the cracked moment of inertia, Icr. The neutral axis location of the cracked beam (measured from the top of the beam) is 6.7139 in.
Read DetailsA simply supported beam with dimensions of b = 16 in., h = 2…
A simply supported beam with dimensions of b = 16 in., h = 24 in., d = 21.5 in., and L = 24 ft supports a uniform service (unfactored) dead load of 1.6 kips/ft including its own self weight plus a uniform service (unfactored) live load of 0.8 kips/ft. The beam is reinforced with two No. 7 Grade 60 bars. The concrete strength is 3,700 psi (normal weight). The beam has Grade 60 No. 3 stirrups. Using the effective moment of inertia, determine the immediate mid-span deflection of the beam due to the combined service loads (dead plus live).The effective moment of inertia Ie = 3,966.4 in.4.
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